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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
:

Please Help Identify and Carburator Issue

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Nazman

06-11-2019 09:35:41




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I'm looking for some help identifying my tractor and solving a carburetor issue.

I would like to know what the numbers on the serial number plate mean. The serial number plate is down by the clutch pedal. The plate is trapezoid shaped with two rivets on the top and one on the bottom. There are two series of stamped numbers on the plate. The series of numbers on the top row are:
515-71189

The series of numbers on the bottom row are:

234 933 -019

My guess is that the serial number is 234 933 which means it's a 1972 Oliver 550:

1. Can anyone confirm?
2. and what does the top series of numbers mean?
3. And what does the -019 after the serial number mean?

Real issue: As you can see from the picture with the carburetor, there is a thumb screw missing and gas is leaking out of the carb. Can I buy that thumb screw? If so what is it called? and What does it do?

Any help would be greatly appreciated.
Thank you.





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B A Star

06-11-2019 21:01:04




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 Re: Please Help Identify and Carburator Issue in reply to Nazman, 06-11-2019 09:35:41  
  Your tractor was built in 1972, note the Product Identification plate is after the second merger of Oliver and MM when headquarters was relocated to Butterfield, Il.

  Top row of numbers: 515 is the model number, a late 550, last model built.   Following the dash after 515 the 7 means it was built as a 2 wheel drive Industrial.   1 means it was built with a gas engine.   Last three is how the tractor was assembled.

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scootergmc

06-11-2019 19:01:46




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 Re: Please Help Identify and Carburator Issue in reply to Nazman, 06-11-2019 09:35:41  
Thats my bad. That out of focus pic had me fooled. I see the drain plug now blended into the background. It's a type c with an adjustable needle. I agree. Looks like the needle assembly is missing.



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scootergmc

06-11-2019 10:12:26




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 Re: Please Help Identify and Carburator Issue in reply to Nazman, 06-11-2019 09:35:41  
That's just your carb bowl drain screw that's missing. Yes, those can be sourced. It should be a Marvel Schebler TSX-811. Offhand, I'd try a brass 1/8 pipe thread plug. I could be wrong. It wouldn't be the first time.



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rustyplow

06-11-2019 15:14:37




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 Re: Please Help Identify and Carburator Issue in reply to scootergmc, 06-11-2019 10:12:26  
That's NOT the drain plug that is missing. The plug can be seen to the left. That carb has an adjustable main jet and he is missing the adjustment needle, or whatever the correct term is. Sorry the pic is sideways. Got a new computer and I'm having issues learning.



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J. Schwiebert

06-11-2019 09:39:17




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 Re: Please Help Identify and Carburator Issue in reply to Nazman, 06-11-2019 09:35:41  
It is a late 550/ 019 is the code for the transmission.



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